The diagram illustrates the process of rainwater circulation in order to be used for human's necessary. Overall, it can be seen that there are several steps to manufacture the proper water, while 2 types in main point are wastewater treatment and storm water treatment.
Initially, the clouds naturally produce rains water which will fall down on nature stored by dam and on residential area collected by tank, special for rain water. Next, both are consumed in various purposes, in which water from damn is allocated to wastewater treatment plant before utilized for drinking, whilst from tank water is distributed for housing activities directly.
In addition, a half of collected result on Water Treatment is recycled into accommodation again. Whilst water household towards river by pipe, the excess treated water towards to same purpose. This water is able to evaporate, then creating cloud. This process reverses.